Foldable firearm

Abstract

The present disclosure describes a foldable firearm that collapses into a folded state under spring pressure. The foldable firearm may include a foldable grip assembly. The foldable grip assembly may include a foldable pistol grip, a foldable trigger assembly, a folding bar, and a foldable hand stop. The foldable grip assembly may fold into the top shell of the foldable firearm. The foldable firearm may also include an ambidextrous charging handle assembly that may include a bottom portion, a top portion, a guide bar, and two opposing charging handles. The charging handles may be pulled to unfold the foldable firearm, and/or butterflied such that pivoting one charging handle causes the other charging handle to pivot. The first-pivoted charging handle may then be pulled rearwards to unfold the firearm. The first-pivoted charging handle may then be pulled further rearwards to rack the slide of the foldable firearm.

What is claimed is: 
     
       1. A foldable grip assembly for a foldable firearm, the foldable grip assembly comprising:
 a foldable pistol grip comprising a pistol grip-frame hinge axis, wherein the foldable pistol grip is rotatably coupled to the frame of the foldable firearm at the pistol grip-frame hinge axis; 
 a foldable trigger, wherein the foldable trigger is rotatably coupled to the frame of the foldable firearm at a trigger hinge axis; 
 a foldable trigger guard assembly, wherein the foldable trigger guard assembly is rotatably coupled to the foldable pistol grip and the frame of the firearm; 
 a hand stop, wherein the hand stop is rotatably coupled to the frame of the foldable firearm at a hand stop-frame hinge axis; and 
 a folding bar, wherein the folding bar is mechanically coupled to the trigger guard at a trigger guard-folding bar hinge axis and is mechanically coupled to the hand stop at a hand stop-folding bar hinge axis. 
 
     
     
       2. The foldable pistol grip of  claim 1 , the foldable pistol grip further comprising:
 a rear part; 
 a folding part; and 
 a pistol grip release button, wherein the rear part is seperably coupled to the folding part and is separated at a break away interface by actuating the pistol grip release button. 
 
     
     
       3. The foldable trigger guard assembly of  claim 1 , wherein the foldable trigger guard further comprises:
 a bottom trigger guard; 
 a forward trigger guard; 
 a trigger guard-pistol grip hinge axis, wherein the bottom trigger guard is rotatably coupled to the folding part of the foldable pistol grip at the trigger guard-pistol grip hinge axis; 
 a trigger guard hinge axis, wherein the bottom trigger guard is rotatably coupled to the forward trigger guard at the trigger guard hinge axis; 
 a trigger guard-frame hinge axis, wherein the forward trigger guard is rotatably coupled to the frame of the foldable firearm at the trigger guard-frame hinge axis. 
 
     
     
       4. The foldable grip assembly of  claims 2 , wherein rotation of the hand stop is controlled via rotation of the folding part of the pistol grip via the foldable trigger assembly and the folding bar. 
     
     
       5. The foldable grip assembly of  claim 4 , wherein, the folding part of the pistol grip and the hand stop rotate in opposite directions when the foldable firearm grip assembly is adjusted to the folded configuration. 
     
     
       6. The foldable grip assembly of  claim 1 , wherein the trigger guard-folding bar hinge axis is not fixed during adjustment of the foldable grip assembly from the folded to the unfolded configuration. 
     
     
       7. The foldable grip assembly of  claim 1 , wherein the hand stop-folding bar hinge axis is not fixed during adjustment of the foldable grip assembly from the folded to the unfolded configuration. 
     
     
       8. A foldable firearm comprising:
 a barrel; 
 a top shell; 
 one or two charging handles extending through the top shell; 
 a bottom shell rotatably coupled to the top shell; 
 a foldable pistol grip comprising a pistol grip-frame hinge axis, wherein the foldable pistol grip is rotatably coupled to the frame of the foldable firearm at the pistol grip-frame hinge axis; 
 a foldable trigger, wherein the foldable trigger is rotatably coupled to the frame of the foldable firearm at a trigger hinge axis; 
 a foldable trigger guard assembly, wherein the foldable trigger guard assembly is rotatably coupled to the foldable pistol grip and the frame of the firearm; 
 a hand stop, wherein the hand stop is rotatably coupled to the frame of the foldable firearm at a hand stop-frame hinge axis; and 
 a folding bar, wherein the folding bar is mechanically coupled to the trigger guard at a trigger guard-folding bar hinge axis and is mechanically coupled to the hand stop at a hand stop-folding bar hinge axis. 
 
     
     
       9. The foldable firearm of  claim 8 , further comprising:
 a rear part; 
 a folding part; and 
 a pistol grip release button, wherein the rear part is seperably coupled to the folding part and is separated at a break away interface via actuation of the pistol grip release button. 
 
     
     
       10. The foldable firearm of  claim 8 , further comprising:
 a bottom trigger guard; 
 a forward trigger guard; 
 a trigger guard-pistol grip hinge axis, wherein the bottom trigger guard is rotatably coupled to the folding part of the foldable pistol grip at the trigger guard-pistol grip hinge axis; 
 a trigger guard hinge axis, wherein the bottom trigger guard is rotatably coupled to the forward trigger guard at the trigger guard hinge axis; 
 a trigger guard-frame hinge axis, wherein the forward trigger guard is rotatably coupled to the frame of the foldable firearm at the trigger guard-frame hinge axis. 
 
     
     
       11. The foldable firearm of  claims 8 , wherein movement of the hand stop is controlled via movement of the folding part of the pistol grip via the foldable trigger assembly and the folding bar. 
     
     
       12. The foldable firearm of  claim 8 , the folding part of the pistol grip and the hand stop rotate in opposite directions when the foldable firearm is adjusted to the folded configuration. 
     
     
       13. The foldable grip assembly of  claim 8 , wherein the trigger guard-folding bar hinge axis is not fixed during adjustment of the foldable grip assembly from the folded to the unfolded configuration. 
     
     
       14. The foldable grip assembly of  claim 8 , wherein the hand stop-folding bar hinge axis is not fixed during adjustment of the foldable grip assembly from the folded to the unfolded configuration.